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US 4,571,932 AGranted
Friction spinning roller arrangement
AssigneesHans Stahlecker, Fritz Stahlecker
InventorsFritz Stahlecker, Hans Stahlecker
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Abstract
An open-end friction spinning arrangement is disclosed with two adjacently arranged rollers driven in the same rotational direction and forming a wedge-shaped yarn forming gap with their cover surfaces. It is provided that the cover surfaces of at least one of the rollers is designed such that it includes different axial zones in the area of the yarn formation region and in the yarn withdrawal direction, in which different radial forces and/or different rotational speeds act upon the yarn being produced.
Claims25
An arrangement for open end friction spinning of yarn comprising:
- two friction rollers rotably drivable in the same direction and disposed adjacent one another to form a yarn forming wedge-shaped gap therebetween,
- fiber supplying means for supplying individual fibers to the wedge shaped gap,
- yarn withdrawal means for withdrawing yarn from the wedge-shaped gap in the longitudinal direction of said wedge-shaped gap,
- and differential radial force means for applying differential radial force to the forming yarn at different alternatingly arranged axial zones of the wedge-shaped gap, said alternatingly arranged axial zones comprising a cyclical arrangement of high and low radial force zones.
1 more element
Dependencies are inferred from the claim text.